Kamala Harris' running mate due to be announced—what we know

Kamala Harris is expected to announce her running mate on Monday—here is everything we know about who it might be and why. The vice president is set to launch a tour of seven key battleground states on Tuesday, by which time she will probably have made her choice public. She will start in Philadelphia, which has done nothing to quell the rumors that Pennsylvania Governor Josh Shapiro has been tapped. He was one of six who were interviewed over the weekend, according to "two people with knowledge of Harris' selection...